Column form



May 22, 1928. 1,670,339

s. D. BUTTERWQRTH COLUMN. FORM Filedug. 19, 192s 4 sheets-sheet 2 Z0 Za Y l /o y Z7 zo o o5 o o f? /0 l fr A /Qf/zfz INVENTOR.

@9am/e2 naffwor.

` ATTORNEY May 22, 1928.

S. D. BUTTERWORTH COLUMN FORM Filed Aug. 19, 1926 4 Sheets-Sheet 3 May 22, 1928.

S. D. BUTTERWORTH coLUN FORM 4 Sheets-Sheet 4 v INVENToR.

d/l/MM M ATTORNEY.

Filed Aug. 19, 1926 Patented May 22, 1928.

l e untreu: STATES SAMEL D. B'UTTRWRT'H, or' MiAiyiI nunon, rLonin.

COLUMN soin/r.

Application llled August 19, 1926: Serial No. 130,19.

This inveliltion` relates to forms for `use in the. building or structures Where concrete or other similar material is used, and it has to do more particularly with metal forms fr round colunfins.`

'Hereto'form it has been `the practice to use wooden forms for such columns. There are anumber'ot objections to Wooden forms among which may be mentioned the expense involved in obtaining new `Wood for each cellum, and also the large amount of time and labor which is required in order to erect a wooden form. It has been proposed to make the wood form of uprights having bands. around them, but many engineers do not allow the use of such. forms as they often bend so' that an imperfect column is, formed. 1n order to make a Wooden form which is ot suflicient rigidity, much time, labor, and

material are required. i

It isvthe aim of this invention to provide a metal form which overcomes the objections to the Wooden form. A form constructed according to the invention can be easily and quickly erected, and the several pieces which goto make up the form can be used over and over again, thus eliminating the necessity of continually obtaining nevvniaterirrl. The form is made up of a minimum number of different parts, so that it can be produced Without great expense, and when the parts are in position, sufficient rigidity is` obtained to prevent bend-ing, so that per feetI columns are formed. After acolumn is formed, the metal parts can be 'easily disassembled and transported to another part of: the same-structure or to a different job, and again erected.

The form consistsl of a number of arcuate metal members which a-re disposed moverlapping relation,` and these members are held in position by supports or braces. The degree to which the members overlap is del terminable, and thus columns of different dimensions may be formed. The arcuate members are equalto, or substantially equah toA the `height of the column to be formed,'

y and there is aradjfustment provided for accurately determining. they height of the form. Inirthe accompanying drawings: .c

Fig. l isa d'agrammatic view showing the form adjusted to' a. small diameter for forming a small column. t Y v Y Fig, elsevier? similar te Flag. lcshQWl-Ilf the form in a larger adjustment for form-l ing al column of large diameter.

Fig. 3 is a perspective vievv ,of part of a formi showing honr the support or brace members are used.

Fig. 45 is a. perspective view of a corner member which is used for connecting the ends of `the supporting members.

Fig. 5 is a perspective View of part of one or the arcuate members showing an auXil` iary' arcuate member, and showing the manner in which the auxiliary member is used y inorderto maire an adjustment for height. Fig.` 6 is a sectional View of a column showing the form resting upon a. floor or base, and "showing hoW the uppermost portion of the form Vmay be'secured to a form for aI beam.-

Fig. 7 is a sectional View taken on line The form consists of a number of arcuate members 1. These members may be pro vided in different lengths. for making eol-y umns of different lengths, as for instance, in a building having columns nine feet in height, kthe arcuate members `will be nine feet or substantially nine feet in height.

These `arcuate members arearranged in overlapped relation so that a round form is provided` for the molding` of a column. Eight of such members arranged in overlapping relation is satisfactory, although larger number, or` perhaps a smaller num- Vllhese members may be secu-red tothe flanges i any desiredman-ner, as by means of Welding vor rivetingi and the members haveangle poi-tions `5,V each' of which is- .provided with aihole 6.- T-he uppermost .member 4;' is pro vidednvith but one angle member, land :i

plurality of holes fr' extend throughthe uppermost portion of the flange and the uppermQStf-member 4;

Then the' several4 arcuate members are' erected to position, they are held in position by supports or braces which take the form `ofmernlr straps 10g There' are feu? merel LII straps used to extend around the torni and, as shown in Fig. 6, the straps are located at spaced points alongr the length of the form. The straps are received ,between the angle members 5, and it is preferable that the arrangement be such that the straps are equidistant from each other.

Each strap is provided with a series of holes A and a. series of holes B. These holes are arranged in an arc so that. one of the holes aligns with the holes (3 in the flange members, depending upon the adjustment of the torni. ln the present instance the form is capable of six adjustments t'or making forms ot' six different sizes, the smallest adjustment being shown in Fig. 1. and ay larger adjustment .shown in Fig. 2. For example, in Fig. 1 the torni ma;v be fourteen inches in diameter. whereas in Fig. 2 the form may be twentnfour inches in diameter. Thus, the innermost hole ot the groups A and B is aligned with the apertures 6 for a. fourteen inch column, and the outermost hole is aligned with the apertures for a twenty-four inch column. The intermediate holes are arranged to make columns of intermediate sizes, as for instance, 16, 1S", 20" and 22". 'li'hese numbers are given because it is customarv to make columns in these sizes, although ot course, the -holes could be arranged to make columns of different sizes trom those given. A suitable instrument, such as an ordinary nail, is to be inserted through the aligned holes when the adjustuicnt is made.

The st ap members cross near their ends and are secured together so as to vprevent a twisting action. For this purpose each strap is provided with a series of holes C and D. These holes are arranged so as to align with each other in accordance with the desired adjustments. In Fig. 2 where the largest adjustment is made, the end holes of the straps align with each other, and a nail or suitable pin. is dropped through the two aligned holes as shown at. 11. Forthe next smaller adjustment. the next adjacent holes are aligned with each other and so on down the line to smallest adjustment, as shown in Fig. l.

For further strengthening the connection between the supporting members, a corner piece 1i?. as shown in Fig. d, can be used. 'lhis corner piece 12 consists of members 13 and 14 which straddle one of the straps, and members 15 and 16 which straddle the adjacent strap. Preferably there is one of these corner members permanently secured to each strap, and for this purpose the ends of each strap are enlarged as shown at 20. .-r spacing element 17 is disposed between the members 13 and 1st. Thus. the strap which extends between themembers 13 and 14 is prerentrd t'rom disengagement. The corner pieceis provided with apertures 18 and 19 which align with one of the apertures in the series C and D when an adjustment is made.

In erecting the torni for a column, say of the smallest diameter, which may be .tourteen inches, the arcuate members are overlapped and the strap braces are placed in position. The apertures (3 are aligned with the innermost hole ot' the series A and B, and a lsuitable nail or pin is dropped through the aligned holes. Each strap is thusl secured to two arcuate members. Then a nail or pin 11 is dropped through the aligned apertures in the ends ot the strap members, and after the corner piece 1:2 has been put into position, nails or pins 2T and 28 are dropped through the aligned apertures in this member and in the .st-rap inembers. 'l'o erect the form for making a column ot the nexty larger size, say sixteen inches, the nails are dropped through the second hole in the series A and B. and the pin 11 is dropped through the next adjacent hole in the series and D. Thus, it will be observed that no measurement is required, in that it is only. necessary, to align the proper holes` and then secure the parts together by inserting nails or pins.

The members 1, as above stated, are equal to, or substantialljv equal to the height of the column to be formed. lloweif'er, in order to obtain very accurate adjustments, auxiliary arcuate members 30 may be used (Figs. 5 and 7). There is one member 30 for each arcuate member l. and this member 3() is formed at one end with a channel 31 which is arranged to slide over thc end of the flange Q. Both channel members are provided with holes 352, and the desired adjustment is obtained by proper alignn'ient ot' the holes 32 with the holesl 7, whereupon av nail or pin may be inserted.

(')ne manner in which the form majY be used is shown in Fig. (l. Here the. form is shown as resting upon the lloor ot a building. The upper end ol the form, more, specilieally the members 3U. extend within a` circular opening ol a plank 35 which forms a part oi the ,form for the beam and floor above. lt may be desirable to nail the uppern'iost end ot the l'orm to the plank 35, as .shown at lti. although this` is not essential. since. the terulency oll tlnx ylorm is to expand when the concrete is poured. and this would be sufficient to keep the upper end ot' the form in place.

lt will be observed that the metal form of this invention is composed o'l a minimum number ol" parts, there being in fact three units, namely, the arcuate members. the supporting strap 10 with its attached corner piece. and the adjustabla auxiliary member $10. The Jforni can be quickly and easily erected. and the proper size deteri'nined h v merel;v aligning the proper holes and insert ing pins or nails. The disassembly of the oriuis also easily accomplished, in 'that the parts i:an be readily. reniovedlom ,each other by.taliingpouttlneiriails. ln case the auxiliary inembcrsgl(),are,nailed into the plank 35, these members can be removed f alter thewlong, arcuate members il. are rej down,

moved and alter the plant: has been talten The column is rendered particularly strong andafigid by rcasonof `the flange i at one edge of cach arcuate member. "fliese flanges aid ju'iatcrially iu preventing the form trom bendingivith tbe result that peri'ect columns are 1loru1ed. bfloreover, the strap braces which extend around the torni aitfecurely held together' by the 4corner pieces so as `to prevent twisting actions, and this adds to the rigidity of the i'orin. i.

l. A metal form 'tor round columns comi prising in coinbination, a plurality of arcuA ate members disjjiosedein overlapped relation, a flan-ge onlone edge of cach member, and supporting means exten-ding through the said illanges.` .i

2. A metalltorm for round columi'ls com;- prising -in combination, a plurality ot aren. ate members disposed in overlapped relation,a flange on one edgeno't each member, and supporting means extending through the said tlanges,'thc said langes being adjustable on the supporting means whereby the amount of overlapping oi" the said members may be varied.

3. A metal forni lor round columns comprising in combination, a plurality of arcuate members disposed in overlapped relation, a flange on one edge of each arcuate member which is cut away at spaced points and provided with angle members, supporting means extending through the cut away portion oil the flanges, said angle members being adjustably secured to said supporting means,

et. A form for round columns comprising in combination, a plurality of arcuate members arranged to provide a circular form, a plurality of supporting straps extending around the l'orm at a given point, these supporting straps beingadjustable relative to nach other 'for columns of different diameters and each arcuate member being connected to a supporting strap, this connection being capable of predetermined adjustment in accrirdaucc Vwith they adjustments of the supporting straps.

A form ytor round columns comprising in combination, a plurality of arcuate members arranged in overlapped relation, a liange on each arcuate member, supporting straps extending around the form, each supporting strap having aV series of holes adjacent an end-whereby it can be adjustably secured to au adjacent supportingl strap, and nach supporting strap having a second series ofholes whereby an arcuate member may be adjustably secured to a strap. '46. A form i'or round columns comprising in combination, a plurality of arcuate mem bers arranged in overlapped relation, supportingl straps extending around the form, cach supporting strap having a. series of holes ailjacentan end whereby it can be ad-` justably secured to an adjacent supporting strap, and each supporting strap having a second series ot holes whereby an arcuate member may be adjustably `secured to a` strap, the holes in each series being arranged at predetermined points so that a given adjustment provides a torni o'l` determined diameter. j

7. A form for round columns.comprising in combination, a plurality of arcuate mem-` bers disposed in overlapped relation, a

flange on each arcuate member, and an auxil. .lary arcuate membe`1 adjustably secured to` thetop ot .said niet mentioned arcuate meni-` bers, these auxiliary arcuate members each having a `channel formation `adapted towtit; over the flange on the first mentioned arcuate member. f'

8. A form for round'columns comprising in combination7 a plurality of arcuate mem bers. disposed in overlapped relation, a iange on each arcuate member provided with holes near the upper end of the'arcuate member, an auxiliary arcuate member provided with a channel vformation having holes through each oi the channel members, this auxiliary member being adapted to'be adj ustably secured to the iirst mentioned arcuate member by means of the said holes.

9. A form for round columns comprising in combination, a plurality of arcuate members disposed in overlapped relation, means for adjusting the degree to which themembers overlap to determine the` diameter of 'the form, and auxiliary arcuate members adjustably secured to the top of said first mentioned arcuate members and arranged tol be automatically adjusted relative to each other upon adjustment of the overlap ot' the lirst mentioned arcuate members,

10. A form lor round columns comprising in combination, a pluralityof arcuate members arranged in overlapped relation, a

flange on one edge of each arcuate member, a plurality ot straps extending around the form, these straps having a series of holes whereby they may be adjustably secured to each other by means ot a pin or nail extending through the holes, and each strap having a second series of holes whereby the justably secured thereto.

11. A form :tor round columns comprising in combination, eight arcuate members arranged .in overlapped relation, supports i'or the torni disposed at spaced points along the length thereof, each support contlange of each arcuate member may 'be ad-V sisting of four straps adjustably secured adjacent their' ends, and means for avdjustably securing two oi the said arcuate members to each of the said straps.

12. A form for round columns comprising in combination a plurality of arcuate members arranged in overlapped relation, a plurality of supporting straps extending around the form, these supporting straps being adjustably connected together at predetermined points to determine the size of the form, and an arcuately arranged adjustable connection for connecting one or lnore of the arcuate members to the strap.

13. A form for round columns comprising in combination a plurality of arcuate members arranged in overlapped relation. means projecting:r outwardly from one or more of the arcuate members, a plurality of straps extending around the form, these straps having a series of connecting devices whereby they may be adj ustably secured to each other to determine the size of the form, the said projection of the one or more arcuate members being adjustably connected to a series of arcuately arranged adjusting devices on the straps.

14. A form for round columns comprising in combination a plurality of arcuate members arranged in overlapped relation, means projecting outwardly from each of the arcuate members, a plurality of straps extending around the form, these straps having a series of connecting devices whereby they may be adjustably secured to each other to determine the size of the form, the said projection of each arcuate member being adjustably connected to a series of arcuately arranged adjusting devices on the straps.

15. A form for round columns comprising in combination a plurality of arcuate members arranged in overlapped relation, means projectingY outwardly from each of the arcnate members, a plurality o' straps extending around the form, these straps having a series of connecting devices whereby they may be adjustably secured to each other to determine the size of the form, the said project-ion of each arcuate member being adjustably connected to a series of arcuately ar 'anged adjusting devices on the straps, the connecting devices in each series being positioned at predetermined points whereby the size of the form is auton'iatically effected by utilizing given connecting devices in each series.

In testimony whereof I affix my signature.

SAMUEL D. BUTTERVVORTH. 

